You will be able to have a maximum of 2 active referrals on your 1st level. Those are called your front line, or direct referrals. You may refer many more people who sign up with your referral link. If you have no active referrals on your front line, then no members you refer will spillover because no one in your downline is eligible yet. So, you may see that you have many more than 2 referrals on your front line if none are active.

Once the members in your front line make their first donations then they can have referrals placed under them. And once you have 2 active members on your front line the next ones who make a donation will spillover before doing so. They will be assigned to someone in your downline as their sponsor. The reset of your referrals will spillover when they register for an account.